Improvement in dog-powers



n. E. PANGBURN.

Dog-Powers.

PatentedAug. H 1874.

No.154,,i075.

' Wiitessas.

THE GRAPHIC C0, PHOTO -LITH.39& 4-] PARK PLACE,N.Y.

UNITED STATES PATENT OFFICE.

DAVID EMORY PANGBURN,.OF UTIOA, NEW YORK.

IMPROVEMENT IN DOG-POWERS.

Specification forming part of Letters Patent No. 154,075, dated August11, 1874; application filed July 2 0, 1872.

exact description of the construction and operation of the same,reference being had to the annexed drawings making a part of thisspecification, and to the letters and figures of reference markedthereon.

Figure 1 is a side elevation embodying my improvement. Fig. 2 is a sideelevation of the same.

This invention has relation to dog-powers; and the novelty consists inthe tread-wheel, made in two parts, and hinged together to form aperfect wheel.

In the annexed drawings, A represents a frame, which is firmlyconnectedtogether by means of cross-bars and brace-rods. M N representthe posts and guard-rails attached to one side of this frame to preventthe animal that drives the wheel from stepping off while operating themachine. K represents the horizontal bar, upon which the journalboxes Jare attached in the usual way, to support and hold the shaft B in itsrelative position. To this shaft B the crank-wheel I is keyed, at itsouter end, as shown in Fig. 2. This crank-wheel, with its shaft, isarranged on a parallel line with the tread-wheel, as will be hereinafterdescribed. 0 D represent the horizontal dividing-arms, the length of thewheel, less the width of the dividing-band. G G are the frame-arms,extending from the periphery to the center of the wheel, and secured totheir respective half-wheels by means of screws, or bolts, and metalplates. On the upper surface of these arms G G is laid the animal-trackor foot-boards H H. F F represent arms, rigidly secured to the upperside of one of the sectional wheels, and to that section that isdesigned to be folded, and connected to the arms 0 G by means of hinges3 3, so that by putting the sections of the wheel together and arrangingthem in the same plane a complete circle is formed for use. The lowerends 0 of the arms F F are intended to come 'up to a level with theiropposite ends, and are prevented from passing beyond, and too far, bymetal stop-plates secured to the arms G. To the under side ofthefoot-boards, and to the outer ends of the frame-arms Gr, is secured acircumferential band, E, which is designed to come in contact with, andto rest upon, the crank-pulley I. This band is to be of a correspondingwidth to the pulley. L represents the spindIebracket, pivoted near itsupper end to the upper end of the inner support of the frame A. Thisspindle-bracket consists of three journal-bearings, a a a with a notchedratchet-lever attached thereto. The vertical shaft 6 of the tread-wheelpasses down through the journal-bearing a and c and is stepped into thelower bearing 0. The adjustable notched ratchet'bar m is pivoted to thelower end of the bracket L, between the bearings 01. and a and works inconjunction with the stop 0, attached to diagonal brace O of the frameA, as fully shown in Fig. 1. By this means the desired angle is given tothe tread-wheel.

The manner of operating my machine is as follows: After the wheel isproperly set and in position, the spindle-bracket is set to the desiredangle to secure such motion and power as may be required; the wheel isdriven by the movement and weight of the animal, and if the wheel runstoo slow or too fast a change can readily be effected by moving theratchetbar m either up or down, as may be required, without stopping themachine. To the crankwheel a pitman can be attached in the ordinarymanuer for the purpose required.

It will be seen from the above description that I am able to adjust thetread-wheel without stopping the animal-by adjusting the notched leverworking in conjunction with the stop on the diagonal bar. Also, I amable, by constructing the wheel in two sections, to fold it in a compactsmall form for storing away and transportation.

I claim as my invention- The sectional hingedtread-wheel, consist-

